Asolid, insulating sphere of radius a has a uniform charge density of ρ and a total charge of q. concentric with this sphere is a conducting hollow sphere whose inner and outer radii are b and c, as shown in the figure below, with a charge of 4q. to specify all three of ρ, q and a is redundant, but is done here to make it easier to enter answers. what is q in terms of ρ and a? q = correct: your answer is correct. find the magnitude of the electric field in the following regions. r < a (use the following as necessary: ρ, ε0, and r.) e = incorrect: your answer is incorrect. a < r < b (use the following as necessary: q, ε0, π, and r.) e = b < r < c (use the following as necessary: q, ε0, π, and r.) e = r > c (use the following as necessary: q, ε0, π, and r.) e = determine the induced charge densities on the inner and outer surfaces of the hollow sphere. (use the following as necessary: q, ε0, π, a, b, and c.) inner surface σinner = outer surface σouter =